feat(docs): add dynamic OG image endpoint constant

Author: roomote

src/constants.ts

@@ -28,4 +28,7 @@ export const OPEN_VSX_URL = 'https://open-vsx.org/extension/RooVeterinaryInc/roo
 export const CONTACT_EMAIL = 'mailto:[email protected]';
 export const CAREERS_URL = 'https://careers.roocode.com';
 export const WEBSITE_PRIVACY_URL = 'https://roocode.com/privacy';
-export const EXTENSION_PRIVACY_URL = `${GITHUB_MAIN_REPO_URL}/blob/main/PRIVACY.md`;
+export const EXTENSION_PRIVACY_URL = `${GITHUB_MAIN_REPO_URL}/blob/main/PRIVACY.md`;
+
+// OpenGraph dynamic image endpoint (served by main site)
+export const ROOCODE_OG_IMAGE_ENDPOINT = 'https://roocode.com/api/og';